What is the E-Commerce Shield package?

The E-Commerce Shield is a monthly retainer package ($1,200/month) designed specifically for e-commerce businesses. It includes monthly bookkeeping with marketplace integration, sales tax filing for up to 5 states, quarterly financial statements, an annual business tax return, quarterly strategy calls, and annual tax planning. It is the most comprehensive package we offer for online sellers.

Do you handle bookkeeping for multiple sales channels?

Yes. We reconcile sales data from Amazon, Shopify, eBay, Walmart Marketplace, Etsy, and other platforms. We integrate these data sources into QuickBooks Online to provide a unified view of your revenue, fees, cost of goods sold, and net profitability across all channels.

Can you help with international e-commerce compliance?

Yes. If you sell internationally or source products from overseas, there are additional compliance considerations including customs duties, VAT implications, and transfer pricing for businesses with foreign entities. We coordinate cross-border e-commerce compliance with our international tax services to ensure full coverage.

E-Commerce & Amazon Seller Accounting | Sales Tax | Los Angeles, CA

E-Commerce & Amazon Seller Services

Selling online creates a web of compliance obligations that most sellers do not fully understand until they receive a notice. From sales tax nexus across dozens of states to multi-channel bookkeeping and cross-border sourcing, we provide the financial infrastructure that e-commerce businesses need to operate with confidence.

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Financial Compliance Built for Online Sellers

E-commerce businesses face a unique set of financial challenges. Revenue flows through multiple platforms, each with its own fee structure and reporting format. Sales tax obligations shift as your customer base grows and your inventory moves between fulfillment centers. Cost of goods sold calculations require tracking inventory across suppliers, warehouses, and returns.

Without a structured approach to these challenges, online sellers often find themselves with inaccurate financial records, unregistered sales tax obligations, and tax returns that do not reflect the true profitability of their business. The cost of correcting these issues after the fact is always higher than managing them proactively.

Our e-commerce services are designed to address these specific challenges. We integrate data from your sales platforms, manage your sales tax compliance across all states where you have nexus, and maintain bookkeeping that gives you a clear picture of your actual margins and profitability.

Platforms We Support

Amazon (FBA and Merchant Fulfilled)
Shopify and Shopify Plus
eBay
Walmart Marketplace
Etsy
WooCommerce
BigCommerce
Custom e-commerce platforms

Sales Tax Compliance for Online Sellers

The Supreme Court's 2018 Wayfair decision fundamentally changed sales tax obligations for online sellers. If you sell to customers in multiple states, you likely have nexus in more states than you realize.

Step 1

Nexus Analysis

$500

We analyze your sales data, FBA warehouse locations, and business activities to determine every state where you have sales tax nexus. The analysis includes a detailed report of your obligations and a prioritized registration plan.

Step 2

Registration

$150/state

We handle the sales tax permit registration process in each state where you have nexus. This includes completing the application, obtaining your permit number, and setting up your filing schedule with each state.

Step 3

Ongoing Filing

$150/state/filing

We prepare and file your sales tax returns on the required schedule (monthly, quarterly, or annually depending on the state). This includes reconciling marketplace-collected tax with your filing obligations.

Featured Package

The E-Commerce Shield

A comprehensive monthly retainer designed specifically for e-commerce businesses. Everything you need to maintain clean financial records, stay compliant with sales tax obligations, and understand your true profitability across all channels.

What Is Included

Monthly bookkeeping with marketplace integration
Multi-channel revenue reconciliation
Cost of goods sold tracking
Sales tax filing for up to 5 states
Quarterly financial statements
Annual business tax return
Quarterly strategy calls
Annual tax planning session

Monthly Retainer

$1,200/month

Annual Prepayment (10% savings)

$12,960/year

Save $1,440 annually

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Amazon Seller Bookkeeping

Amazon sellers face unique bookkeeping challenges. Between FBA fees, storage costs, returns, reimbursements, and advertising spend, understanding your true profitability requires specialized knowledge of the Amazon ecosystem.

Revenue Reconciliation

We reconcile your Amazon settlement reports with your bank deposits to ensure every dollar is accounted for. This includes tracking the difference between gross sales, Amazon fees, refunds, and net deposits.

Fee Analysis

Amazon charges dozens of different fees, from referral fees and FBA fulfillment fees to storage fees and advertising costs. We categorize and track every fee so you understand exactly where your money is going.

COGS Tracking

Accurate cost of goods sold is essential for understanding your margins. We track inventory costs from purchase through sale, including landed costs for imported goods, and calculate your true per-unit profitability.

Reimbursement Tracking

Amazon owes sellers reimbursements for lost, damaged, and destroyed inventory more often than most sellers realize. We track your reimbursement claims and ensure they are properly recorded in your books.

Cross-Border E-Commerce Compliance

If you sell internationally or source products from overseas, your compliance obligations extend beyond domestic sales tax. We coordinate with our international tax practice to ensure full coverage.

Import Duties & Customs

Proper classification and documentation of imported goods, including landed cost calculations for accurate COGS.

International Entity Structure

Guidance on entity structure for sellers with operations in multiple countries, including transfer pricing considerations.

VAT & GST Compliance

Coordination with international tax advisors for VAT/GST obligations in countries where you sell directly to consumers.

Frequently Asked Questions

Common questions about this service area.

Sales tax nexus is the connection between your business and a state that triggers an obligation to collect and remit sales tax. Nexus can be established through physical presence (an office, warehouse, or employee in the state) or economic activity (exceeding a revenue or transaction threshold, typically $100,000 in sales or 200 transactions). If you sell on Amazon, your inventory stored in FBA warehouses creates physical nexus in those states. We perform a nexus analysis to determine where you have obligations.

When you use Fulfillment by Amazon, your inventory is stored in Amazon warehouses across multiple states. In most states, having inventory stored there creates physical nexus, which means you are required to register for a sales tax permit, collect sales tax on orders shipped to that state, and file periodic sales tax returns. Amazon handles collection in marketplace facilitator states, but you may still have filing obligations.

Related Guides

Learn more about this topic with our in-depth guides.

LLC vs. S-Corp Comparison

Compare entity structures to find the optimal tax setup for your e-commerce business.

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U.S. Tax Compliance Guide

Critical compliance information for online sellers including sales tax, Form 5472, and ETBUS rules.